Out with the old...

My daughter's cat died this past weekend. My husband and I were trying so hard to figure out how the tell her. She loved this cat. She named him and renamed him. She drew pictures for him and read to him. So, we brought her into our bedroom and I began to cry. All I could muster was "your kitty was sick...." Gene took over. He told her in the simplest way and without a missing a beat also told her that we would get her another kitty very soon. She said "Really?!"..with much excitement. A minute later she was out of the room and for most of the night we were online looking for a kitten. On one hand, I am happy that she didn't cry and feel bad. On the other hand, I want her to feel that loss just a little bit and miss her cat. This was 4 days ago and she still hasn't mentioned a word about it. We got her the new cat (6 months old) yesterday and she fell in love all over again. He really is a sweet cat and fits into the family perfectly. I just wonder if she is hiding these feelings about the cat that has passed or does she really not care that much?? Should I bring it up again and ask her? I don't want her to feel sad on the inside and keep it from me. Am I over-reacting?